ABSTRACT
AIM: To compare the differences in choroidal structure between hyperopic amblyopia and normal children of the same age by the enhanced depth imaging optical coherence tomography(EDI-OCT)technique.METHODS: There were 35 cases in 50 eyes of children with hyperopic amblyopia visiting our hospital in January 2021 to December 2021 selected in the amblyopic group, and 30 cases in 51 eyes of healthy children who matched general data in the same period were selected in the control group. EDI-OCT examination was performed to measure the choroidal thickness(CT). After image processing, the total choroidal area(TCA), luminal area(LA), stromal area(SA)and choroidal vascularity index(CVI)were obtained.RESULTS: TCA(except inferior quadrant), SA(except inferior quadrant of the outer ring), LA and CT(except inferior and temporal quadrant )in the amblyopic group of each area were significantly larger than that in the control group(P<0.05), and there was no significant difference in CVI between the two groups except the temporal quadrant of the outer ring(P>0.05). There was no significant difference in CT for all degrees of hyperopic amblyopia, with the exception of the nasal quadrant(P>0.05).CONCLUSION: Hyperopic amblyopia is accompanied with abnormal choroidal structure. As the degree of hyperopia increases, TCA, LA and SA exhibit increasing trends. The changes in choroidal structure are presumed to be related to hyperopic amblyopia.
ABSTRACT
We reviewed records of 50 bilateral hyperopic amblyoic patients who visited ophthalmologic clinic at Yeungnam University Hospital between December 1984 and October 1993, and investigated the effect of age at initial correction, magnitude of hyperopia and duration of correction on corrected visual acuity with the lapse of time. Criteria for selection included the followings; hyperopia of 3.50 diopters or more, astigmatism of 2.50 diopters or less, and anisoametropia of 1.25 diopters or less. Full cycloplegic corrections were prescribed at the initial visit to all subjects. The distribution of initial corrected visual acuity was 0.1 to 0.5. Age at initial correction varied from 2 years to 8 years(mean 3.98 years). The magnitude of hyperopia appeared to have the greatest influence on the visual outcome at initial correction. Duration of correction also influenced on the visual outcome, showing continuous visual improvement during 4 years after initial correction. The age at initial correction did not appear to influence on the initial and final corrected visual acuity. A comparision between initial and final corrected visual acuity showed a sigificant difference, irrespective of age at the intial correction or magnitude of hyperopia.